Planter block



FIG. 1 is a top perspective view of a planter block;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a front side elevational view thereof; and,

FIG. 7 is a rear side elevational view thereof.

The broken lines in the figures depict portions of the planter block that form no part of the claimed design. 

CLAIM The ornamental design for a planter block, as shown and described. 